A system (64) of a machine includes a network of nodes (68a, 68b) distributed throughout the machine. Each of the nodes (68a, 68b) is operable to communicate through electromagnetic signals. The system (64) also includes a radio frequency transceiver (204), a first antenna (206) coupled to the radio frequency transceiver (204), a second antenna (208) coupled to one or more sensor nodes (68b), and a controller (66) coupled to the radio frequency transceiver (204). The controller (66) is configured to select at least one sensor node (68b) to interrogate, transmit one or more interrogation frequencies from the radio frequency transceiver (204) through the first antenna (206) to the second antenna (208), receive one or more sensor frequencies at the first antenna (206) broadcast from the second antenna (208) based on a frequency response of the at least one sensor node (68b) to the one or more interrogation frequencies, and determine one or more sensed values based on the sensor frequencies received at the radio frequency transceiver (204) through the first antenna (206).